(Swartzia cubensis)

Katalox has exceptional strength properties, and is among the very stiffest and strongest woods available worldwide. Its dark color makes it a popular substitute for ebony, and the wood is sometimes called Mexican Royal Ebony, though it is not a true ebony in the Diospyros genus. Grain is usually straight, but can also be irregular or interlocked. With a fine even texture and good natural luster. Varies depending upon species, but generally very durable. Heartwood is usually considered to have a high resistance to decay and termites; though it is susceptible to marine borers.